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Teallite

Year of discovery: 1904 (Santa Rosa mine, Bolivia), 1985 (Japan)

Locality list: A locality of teallite

• PbSnS₂
• (Pb,Sn)SnS₂
• [Pb²⁺][Sn⁴⁺][S₂]

• Class: Sulfide
• Soluble in: concentrated HCl, concentrated HNO₃

• Pb => Sn: Herzenbergite (Series)

• Color: Gray, Dark gray
• Tarnish: Dull luster or Iridescent
• Streak: Black
• Luster: Metallic
• Diaphaneity: Opaque

• Habit: Thin tabular on {001}, warped and bent
• Striation: [110] on {001}
• Twin: Exist

• Cleavage: Perfect on {001} (1 plane)
• Hardness: 1.5-2
• Density: 6.4

• System: Orthorhombic
• Group: mmm, Pnma
• Lattice: a=4.3, b=11.4, c=4.1

Etymology: Jethro Justinian Harris Teall (1849-1924), British geologist